scala - 如何在 Akka-http 2.4.1 中包含 application/x-www-form-urlencoded HttpHeader？

Question

我正在使用 Akka Http 2.4.1 向 twitter api 发布 https 请求。

据他们documentation ，我需要两个httpheader。即，授权和内容类型。

引用他们的文档:

该请求必须包含一个 Content-Type header ，其值为 application/x-www-form-urlencoded;charset=UTF-8。

这是我的代码:

val authorization = Authorization(BasicHttpCredentials(key, secret))

/*
   This header is removed from the request with the following explanation!
   "Explicitly set HTTP header 'Content-Type: application/x-www-form-urlencoded;' is ignored, illegal RawHeader"
*/
val contentType = RawHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8")

Http().singleRequest(
    HttpRequest(
        uri = Uri("https://api.twitter.com/oauth2/token"),
        method = HttpMethods.POST,
        headers = List(authorization, contentType),
        entity = HttpEntity(`text/plain(UTF-8)`, "grant_type=client_credentials"),
        protocol = HttpProtocols.`HTTP/1.1`))

如何包含 Content-Type带有值 application/x-www-form-urlencoded;charset=UTF-8 的 header 使用 Akka-http 2.4.1？

Answer 1

我想如果你改变entity您的值(value) HttpRequest至 FormData像这样:

HttpRequest(
    uri = Uri("https://api.twitter.com/oauth2/token"),
    method = HttpMethods.POST,
    headers = List(authorization),
    entity = FormData("grant_type" -> "client_credentials").toEntity,
    protocol = HttpProtocols.`HTTP/1.1`)
)

那么你应该得到 Content-Type为您自动设置为 application/x-www-form-urlencoded;charset=UTF-8